Swing



Nov. 5, 1929. c. H, BALDWIN SWING Filed Jan. 18, 1927 wila,

INVENTOR. lld

' lines some dist-ance and to provide a meansfor Patented Nov. T5929vunan Price 1 CLOISE -I. BALDWIN, OF FORT -WOR'II'I, TEXAS, ASSIGNOR TOTEXAS STEELLCOMPANY, OF FOR-T W'GRTH, TEXAS, -A CORPORATION OF' DELAWARESWING Application med January 1819277. "Serial No. 161,938.

This invention relates to a swing, designed primarily for use inconnection with pull rods employed in the operation of oil or gas wellpumps, but it is to be understood that a swing, in accordance with thisinvention can be employed for any purposes for which it is foundapplicable, and the invention has for its object to provide, in a manneras hereinafter setforth, a device of the class referred to including anoscillatory member interposed between and connecting a pair of pull rodstogether, and further with said device including means to provide -forthe lubrication of said member and for the lubrication of the stirrupsemployedfor attaching the pull rods to the oscillatory member. I

When pumping a number of oil wells,

where the power is supplied from a central pumping plant, the wells areoperated by at-l taching them to surface lines running from the powerplant to each of the wells.

T he surface lines consist of pull irons suspended or held upa shortdistance from the ground. At each revolution of the pumping powerthe'rods move backward and forward, thereby delivering up and ldownmotion to the pumps in the wells. By this method a great many wells canbe pumped Afrom one central power plant.

Very often, due to becomes necessary to extend these surface turningtheir direction at various angles, in order to connect them to the Well.This 1s accomplished by using a swing, mounted on bearings with thesurface lines attached to both ends bythe use of a stirrup, mountedinthe bearings of the same.

Heretofore only shallow wells have been pumped by this method, but fromtime to time greater depth wells are being attached to cene.

i tral pumping plants which necessitate amore4 rigidly constructed swing.as well as more ade uate means for lubricating the bearings of t iesame, and which isprovided for by a y pull rod coupling in accordancewith this invention. l

' Further ob; ects of the invention are to prof the topography andgeneral layout of the property, as well yas interference from highway orproperty lines, itl

vide, in av manner as hereinafter set forth a i i pull rod couplingwhich is comparatively simpleinits construction and arrangement,

view the invention consists of the novel con struction, combination andarrangement of parts as hereinafter more specificallyl de-` scribed andillustrated in the accompanying drawings wherein is shown an .embodimentof the invention, but it is to be understood that changes, variationsand modifications can be resorted to which fall within the scope oftheclaims hereunto appended.

In the drawings wherein like reference characters denote correspondingparts throughout the several views:

Figure ll is a top plan view of a swing in accordance with thisinvention. Figure 2 is a section on line 2-2 Figure 1.

Figure 8 is a section on line 3 3 Figure 2.

`Figure 4 is-a section on line Figure 1.

Figure 5 is a section on line 5-.5 Figure l.

Figure 6 is a top plan viewfof vthe head piece forming a part .of theoscillatorymem-` :The oscillatory element includes a head' memberreferred to. generally by the reference character l andv which consistsof a tubuence .character 2 and said part 2 is lformed of a pair .of endportions 3, 4 and an intermediate portion 5 whichlisfof greater diameterthan Vlar part,.referred to generally by the' refer- 'l n the diameterofthefend portions 3, 4. :The

tubular part 2 isfvertically disposed and Owing tothe intermediate part5 v.beingof greater diameter than the end part 3,4 the `tubular :part 2intermediate the ends thereof is provided with` .a pair of peripheralshoulders 6, 7:. The shoulder 6 is formed threugliout with an annulargroove 8. The

shoulder 7, which is the lower shoulder, is square-d throughout. Theintermediate part 5 is formed with a lengthwise extending groove 9 inthe periphery thereof and said groove opens at one end in the groove 8and its other end at the face'of the shoulder 7. The groove 8 providesmeans for collecting lubricant and the groove 9 forms a'passage for thelubricant from thev groove 8 tothe lower end portion 4: of the tubularpart 2. The end portions 3, 4 provide journals for the head memberl l.

Formed integral .with the intermediate portion 5, centrally thereof, andextending at right angles with respect to each other, is a. pair of arms10, 11 and each of said arms has both ofrits 'faces formed withlengthwise grooves 12 which open at the outer end of their respectivearms and terminate at a point removed from the inner end thereof. Thearms 10 and 11 are connected together by an inclined brace piece 13formed integral therewith and arranged .forwardly with respect to thetubular part 2, see Figure 6. |The arm 10 as well as the arm 11 isprovided with a plurality of spaced openings 14 in the grooved portionsthereof. v

Secured to the arms 10, as well as the arm 11, is a pair of oppositelydisposed channelshaped bars 15, 16v of appropriate length and which aremaintained in spaced relation with respect to each other. The inner endof each pair ofbars is seated inthe grooves 12 and is `iixedly securedto the arm 1() or l1, by the holdfast devices 16 extending through' thepair of bars and also through the openings ,14. The bars 15 and 16project from the arm 10 or 11,'see Figure 2.

Extending from one pair of bars to the other, as woll as arranged betweneach pair of bars, isY -.pair of combined bracing and spacing rods 18,having at each end terminal portion thereoffixedly securedin position byy holdfast devices 1-9. y The ends of the rods 18 are fiush with theouter side edges of the pairs of bars 15, 16. The rod 18,7in` connectionwith an arm 10, or 11, maintains each pair l* each other."

From the construction and arrangement of parts ofthefcscillatory'element it isset up in the form of abell crank, and the'combined Y holding or supporting, bearing and lubricat? ing means forsuchelement associates with the journals-,thereof which are formed bythe end portions 3, 4' of the tubular part 2. The said member 21. Themember 20 includes a lubricant pocket 22 Yformedin the top thereof, acylindrical chamberv23 for the reception of positioned below the pocket22. The bottom 221 of the pocket22 is formed with openings 25 and 26.The diameter of the chamber 23 is slightly greater than the diameter ofthe end portion 3, but the diameter of such chamber is less than thediameter of the intermediate part 5v of the tubular part 2. The openings25 and 26 are so arranged that the lubricant discharged from the pocket22 will be equally divided, one portion going to lower bearing throughtubular part 2, the remainder flowing downthe periphery orvbearing surface on the outside diameter of the upper portion of part 1. A body ofwaste 27 is arranged in the pocket 22. The pocket 22 and chamber 23 arearranged in the forward part of the member 20. The inner part of themember 2O is provided with a vertically disposed concavity 28 of arcuateform to provide for the abutting of the member 20,`against a standard,post or other support 29. The width of the intermediate part of themember 2O is greater than the diameter of the post or standard 29. Theintermediate-part of the member 2O is cut away at its top and bottom toform each side thereof with an upper and a lower shoulder indicated at30, 31 respectively. By providing the intermediate portion of the member2O with the.

shoulder 30, 31 each side of said member 20 is formed with an integralweb 32 positioned between each pair of shoulders, see Figure 3. Aboveand below each web 32, the member 2O is formed with a lengthwisedisposed opening 33 which extends from the rear edge vof the member 20and terminates at the shoulder. The openings 32 vare positioned adjacentthe concave part 28 of the member 20. The member 20 is fixedly securedto the standard or post 29 by a pair of superposed yokes 34: and eachyoke extends through a pair of openings 33 and has its ends providedwith clamping nuts 35 which abut against a pair of shoulders. The nuts35 carried by the upper yoke abut against the shoulders 30 and the nuts35 carried by the lower yoke abuts against the shoulders 31. The yokes34 embrace the post Vor standard 29 and in connection with the nuts 35and the shouldered portions of the member 20 fixedly secures the same inposition.

The member 20 is of inverted cup-shape and the member 21 cup-shaped. Themember 21 is constructed and secured in the same manner as the member20, with this exception that it is not provided with a lubricant pocket22 or the ports 25, 26. The member 20 acts as a means for su portino`the tubular art means includes an upper bearing member 20 p C p and alower combined bearing and supporting 2, as well as providing a bearingtherefor. The chamber formedV in the member 21 and which receives theend portion 4 of the tubular part 2, is indicated at 36. Otherwise thanthat as stated the construction ofthe member Y v21 is the same as themember 20.

The lubricant passing down through the tubular part 2 is collected uponthe bottom 37 of the chamber 36. The lubricant passing through the port26 and down 'between the end portion 3 of the part -2 and 'the wall ofthe chamber 23 falls into the groove 8 from where 'it 'is conducted bythe passage 9 into the chamber 36 between the end portion 4 of the part2and the wall of said chamber 36. The chamber 36 maybe provided Withwaste surrounding the end portion 4 of the part 2.

The oscillatory element Ioscillates Within the members 2O and21 andduring its oscillatory movement is lubricated owing to the constructionand arrangement of the members 2O and 21 and with .the setting up of themember 21 with the lubricant'pocket 22, opening 25, port 26 andfurther'with the setting up cf the intermediate portion ofthe tubularpart 2, with the groove 8, and passage 9. The yokes 34, in connectionwith the nuts 35, provides the anchoring means for the combined holdingor supporting, bearing and lubricating means for :the oscillatoryelement or swing.

The stirrup receiving, attaching and lubricating members are disposed atright angles with respect to 'each other and carried at the ends :of theoscillatory element or swing, the latter as :before stated being in theform of a bell crank.v Two of such members are shown and indicatedgenerally at 38, 39 and each is arranged against the outer terminalportion of the inner side of a pair of bars 15, 16. As each of thestirrup receiveing, attaching .and lubricating members are of the sameconstruction, but one will be described, asthe description of onewillapply to the other. Each of ,said members vincludes a body portion40 provided on its outer face with spaced transversely extendingconcavities or grooves 41, 42. The intermediate part of the body portion4() -is of less height than the end parts thereof and each yend part isformed with a lubricant reservoir 43. Leading from the reservoir'43, ata point abovc the inner end 'wall thereof is a lubricant supply duct 44'which opens into V'a concavity or groove. rEhe ducts 44 are oppositelydisposed with respect to each other and of angleshaped contour. Formedintegral with the body portion 40, is a shank 45 which extends between apair of bars 15, 16 and is ixedly secured therewith by the holdfastdevices 46. Y

The pull rods are indicated at 47, 48 and the former has securedtherewith a clamp 49 which 'carries the stirrup 50.V The'rod 48 hassecured thereto a clamp 49 which carries the stirrups 50. The stirrupsare mount-ed in the concavities or grooves 42, but they can also bemounted in the concavities or grooves 41. rlhe members 38, 39 providemeans for attaching to the oscillatory element or swing, that is to sayeach member,

y a plurality of pull rods if desired.

All lubricant reservoirs are made integral with the part they serve,thus avoiding leakage of lubricant.

'The construction is such as to furnish suflicient lubricant fortwenty-four hour operation with a single application.

All lubricant ducts are extremely short, thus lessening the liability ofbecoming clicked.

Both upper and lower corner or fulcrum bearings are served from a singlereservoir, the design of which insures anequal distribution of lubricantwithout using dual reservoirs for this purpose. y

'Srtirrup boxes or attaching members are doubled to accommodate two rodlines in the same direction if necessary, each bearing being lubricatedfrom individual reservoirs.y

This is accomplished by a duct leading from a poi-nt approximatelyone-halfthe depth of the reservoir and directly to the bearing surfacein Contact with the stirrup in such a manner that the stirrup serves asa valve or cover for this duct to prevent escape of lubricant except asa film, which is distributed uniformly over the entire bearing surfacedue to the oscillating movement of these parts in actualservice. As thisduct or'passage is `approximately midway of the oil reservoir, itfollows that it isalso approximately midway of bearing surfaces, therebypermitting the lubricant film to travel the minimum distance toaccomplish complete lubrication. That part ,of the reservoir below theoutlet is useful asa catch basin for any `sediment or moisture thatmight accumulate due to the fact that the equipment is `always exposedto the `action of the elements. For the same reason, all lubricantreservoirs are so placed as to permit the use of a cover if desired.

hIt is thought swing, in accordance with this invention, can be readilyunderstood, and although the preferred embodiment ofV ythe invention isas illustrated and described, yet it is to be' understood-that changesin the details ofv construction can be had which will fall within thescopeof the invention as claimed.l

i What I'elaim isz-.- y

1. A swing comprising an oscillatory element including a head piecehaving ournals as a part thereof and further including ya lubricantcollecting groove at the inner end of one of the journals and aperipheral passage opening into and Yleading Ifrom said groove totheother of the'journals.

2.1na swing an oscillatory element for interposition between thepullrods and inv-cluding a head piece formed of a tubular vro the many`advantages of a part havingan intermediate and a pair ofl endportions,said end portions constituting ]o. urnals,sa1d intermediate part havingone end thereof formed with a lubricantcollecting groove positioned atthe innerend of one of saidjournals,said intermediate part i furtherprovided with a peripheral lengthwise disposed passage opening into and.leadpiece provided with oppositely extendingtubular journals, of acombined holding, bearing and lubricating means for said oscillatoryelement, said means comprising a pair oic superposed, spaced castingseach formed with a ournal receiving chamber, said chambers beingoppositely disposed with respect to each other, the upper of saidcastings provided at its top wit-h a lubricant reservoir opening attwopoints into one of said chainbers 'for supplying lubricant into andeX- teriorly of the journal within such chamber and the other of saidchambers receiving lubricant through the head piece and ournals iti-omthat chamber with which the lubricant reservoir communicates, and meansengaging with each casting for anchoring it in position.

4. A swing comprising an oscillatory element in the form of a bell crankprovided with a head piece having a pair of oppositely disposed hollowjournals spaced from each other and communicating with each other, apair of supeiposed, spaced castings each provided witli a chamber forthe reception of a journal, said chambers oppositelyvdisposed withrespect to each other, one of said castings provided at its top with alubricant reservoir communicating at one point with the interior of oneof saidjournals and at another point with one oit said chambersexteriorly of such journal, and said head piece provided Von itsperiphery with means :tor conducting lubricant tothe periphery of theother of said journals, and means for anchorin?` each of said castingsin position.

5. Ina swing, an oscillatory element including a hollow head pieceprovided 'with oppositely extending tubular ournals, a combined holding,bearing and lubricating means for said oscillatory element, said meanscomprising a pair of superposed, spaced castings each lformed with ajournal receiving chamber, said chambers being oppositely disposed withrespect tor each other, the upper of said castings providedat its topwith a lubricant j v reservoir opening at two points into one Vof saidchambers for supplying lubricant into :and exteriorly of the journal insuch chamber and the other of said chambers receiving lubricant throughthe head piece and journals Vfrom that chamber with which the lubricantVreservoir communicates, means engaging with each casting or anchoringit in position, and pull rod stirrup receiving and attaching memberscarried by said element and each of said members including means toprovide for the lubrication of a stirrup carried thereby.

6. In a swing an oscillatory element including a hollow head providedwith a pair of oppositely disposed hollow journals, and a pair ofoppositely disposed combined holding and bearing members includingchambers for said journals, said members arranged in superposed, spacedrelation and one provided with a lubricant reservoir and further havingmeans for the discharge of the lubricant into one of said chambers andwithin and eX- teriorly of the journal in such chamber whereby thelubricant will be supplied t0 the other journal and chamber.

7. In a swing for the purpose set fort-h, a hollow head open at each endand having extended from its endst-ubular journals opening thereinto, apair of arms integral with the head, disposed kat right angles withrespect to each other and positioned on the head intermediate the endsthereof, said arms having the top and bottom thereof grooved, a pair oroppositely disposed channel bars seated in and secured to each of saidarms and arianged'in spaced relation, and a brace element common tosaid-pairs of channel-bars and extending between and secured to the barsof each pair.

8. A swing Jfor the purpose set forth including a hollow head lformed ateach end with a tubular journal opening thereinto and providedintermediate its ends with a pair of arms disposed at right angles withrespect to each other, bracing means between said arms, twov pairs offlanged bars, the bars of one pair disposed at right angles with respectto the bars of the other pair, means for securing the inner ends of thebars of said pairs to the said arms, and stirrup receiving means securedat the outer ends of said pairs of'bars. In testimony whereof, Iaiiiximy signature

